50/60-Hz transformers

Reactive power in volt-amperes is calculated from the output voltage and output current. It describes the transformer’s electrical load capacity under the specified operating conditions. Other factors relevant to the selection process include the type of load, duty cycle, temperature, and required voltage reserve.

EI transformers are robust, offer design flexibility, and are suitable for a wide range of mounting and connection configurations. Toroidal transformers often allow for a compact, low-profile design and favorable electrical characteristics. The appropriate core shape depends on power rating, installation space, stray field, inrush behavior, cost, and manufacturing requirements.

A PCB transformer is suitable when an electrically isolated power supply needs to be integrated directly onto a printed circuit board. Key factors include the pin pitch, height, creepage and clearance distances, power rating, ambient temperature, and the thermal behavior of the entire assembly.

Without a load, voltage losses in the windings and magnetic circuit are lower. Therefore, the no-load output voltage may be higher than the rated voltage under load. For sensitive electronics, this value must be taken into account during rectification, filtering, and voltage regulation.

Yes. Transformers can be designed with multiple separate secondary windings or windings with taps. The wiring, load, and insulation requirements must be specified during the design phase.

Yes. An existing data sheet, drawing, schematic, or prototype can serve as a starting point. Electrical, mechanical, and thermal requirements are reviewed and translated into a documented, production-ready design.